Change of Postural Stabiligy according to Feet Position and Platform Speed

양발 넓이와 힘판속도에 따른 자세안정성의 변화

The purpose of this study was to evaluate of balance performance and to examine the relationship between balance performance and feet position, platform speed. Twenty two subjects(men 8, women 14, mean age 24.45years) performed nine balance test with eyes closed for 25seconds:3 feet position(feet together, feet 12cm in apart, feet 24cm in apart) and 3 platform speed$(100\%,\;70\%,\;40\%)$. The results were as fellows: 1. There are significant difference between center of balance and feet position(p<0.05). 2. There are no significant difference between center of balance and plaform speed(p<0.05). 3. There are significant difference between sway index and feet position(p<0.05). 4. There are significant difference between away index and plaform speed(p<0.05).